Refrigerant Charging; Distribution Method - LG ARUN050LMC0 Installation Manual

16
!
WARNING
• Regulation for refrigerant leakage
: the amount of refrigerant leakage should satisfy the following
equation for human safety.
Total amount of refrigerant in the system
Volume of the room at which Indoor Unit of
the least capacity is installed
If the above equation can not be satisfied, then follow the
following steps.
• Selection of air conditioning system: select one of the next
- Installation of effective opening part
- Reconfirmation of Outdoor Unit capacity and piping length
- Reduction of the amount of refrigerant
- Installation of 2 or more security device (alarm for gas leakage)
• Change Indoor Unit type
: installation position should be over 2m from the floor (Wall
mounted type → Cassette type)
• Adoption of ventilation system
: choose ordinary ventilation system or building ventilation
system
• Limitation in piping work
: Prepare for earthquake and thermal stress

Refrigerant charging

Ⓐ Manifold Gauge
Ⓑ Low pressure side Handle
Ⓒ High pressure side Handle
!
WARNING
• Pipe to be vacuumed : gas pipe, liquid pipe
• If the refrigerant amount is not exact, it may not operate
properly.
• If additionally bottled refrigerant amount is over 10%, condenser
burst or insufficient indoor unit performance may be caused.

Distribution Method

Horizontal Distribution
Compressor
Module
≤0.44 (kg / m 3 )
1st
Compressor
Module
1st
1st
Main pipe
Distribution
Vertical Distribution
- Ensure that the branch pipes are attached vertically.
Compressor
Module
Compressor
www.lgcomfortcooling.co.uk Module
Liquid pipe
Gas pipe
The others
Compressor
Module
Compressor
Module
Compressor
Heat Exchanger
Module
Module
2nd
Heat Exchanger
Module
2nd
3rd
3nd
Main pipe
Distribution
Heat Exchanger
Module
Heat Exchanger
Module
Heat Exchanger
Module
Heat Exchanger
Module
Header
Heat Exchanger
Module
3rd main pipe distribution
2nd
1st
3rd